The U.S. Food and Drug Administration said Wednesday that a Novartis AG unit is recalling a three-month birth-control regimen sold in the U.S. because of a packing error. The recall involves a birth-control pill called Introvale that is marketed by Sandoz. FDA said the recall, which affects 10 lots distributed between January and May 2012, was prompted by a consumer report of the inactive pills being located in the row labeled week nine.